The Reaper Approaches
This mod makes the Black Death much more infectuous and longer lasting to better match the historical event.
Warning: this will literally kill upwards of a third of all characters in the game (makes for great lag removal).
Also added a 200 year immunity to further Bubonic Plague infections making the game actually playable with the game rule that allows multiple Bubonic Plagues to happen (disabled for Doomsday plague frequency game rule).
